uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/editors/oed/default.nix

@@ -0,0 +1,33 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+}:
+
+stdenv.mkDerivation rec {
+  pname = "oed";
+  version = "6.7";
+
+  src = fetchFromGitHub {
+    owner = "ibara";
+    repo = "oed";
+    rev = "oed-${version}";
+    hash = "sha256-Z8B1RIFve3UPj+9G/WJX0BNc2ynG/qtoGfoesarYGz8=";
+  };
+
+  postPatch = lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
+    substituteInPlace configure --replace "./conftest" "echo"
+  '';
+
+  installPhase = ''
+    install -m755 -Dt $out/bin ed
+    install -m644 -Dt $out/share/man/man1 ed.1
+  '';
+
+  meta = with lib; {
+    description = "Portable ed editor from OpenBSD";
+    homepage = "https://github.com/ibara/oed";
+    license = with licenses; [ bsd2 ];
+    mainProgram = "ed";
+    platforms = platforms.unix;
+  };
+}